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A LinkedIn carousel is a swipeable document post, with slides best sized square at 1080 by 1080 or portrait at 1080 by 1350. PostDecks previews your slides in the order you add them, so you can see how the set looks in the feed before you publish.
| Slide size | 1080 × 1080 (square) or 1080 × 1350 (portrait) |
|---|---|
| Aspect ratio | 1:1 or 4:5, shared across slides |
| Caption limit | 3,000 characters |
| Slides | 5 to 10 works best |
Carousels are great for step-by-step content, so the first slide has to earn the swipe. Export a PDF or PNGs to review the full set. It all runs in your browser, with nothing uploaded.